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.TH "VFS_COMMIT" 8 "" "" ""
.SH NAME
vfs_commit \- flush dirty data at specified intervals
.SH "SYNOPSIS"
.ad l
.hy 0
.HP 21
\fBvfs objects = commit\fR
.ad
.hy

.SH "DESCRIPTION"

.PP
This VFS module is part of the\fBsamba\fR(7) suite\&.

.PP
The \fBvfs_commit\fR VFS module keeps track of the amount of data written to a file and synchronizes it to disk when a specified amount accumulates\&.

.PP
\fBvfs_commit\fR is useful in two circumstances\&. First, if you have very precious data, the impact of unexpected power loss can be minimized by a small commit:dthresh value\&. Secondly, write performance can be improved on some systems by flushing file data early and at regular intervals\&.

.PP
This module is stackable\&.

.SH "OPTIONS"

.TP
commit:dthresh = BYTES
Synchronize file data each time the specified number of bytes has been written\&.

The following suffixes may be applied to BYTES:

.RS
.TP 3
\(bu
\fBK\fR \- BYTES is a number of kilobytes
.TP
\(bu
\fBM\fR \- BYTES is a number of megabytes
.TP
\(bu
\fBG\fR \- BYTES is a number of gigabytes
.LP
.RE
.IP

.SH "EXAMPLES"

.PP
Synchronize the file data on the [precious] share after every 512 kilobytes (524288 bytes) of data is written:

.nf

        \fI[precious]\fR
	path = /data/precious
	vfs objects = commit
	commit:dthresh = 512K

.fi

.SH "CAVEATS"

.PP
On some systems, the data synchronization performed by\fBcommit\fR may reduce performance\&.

.SH "VERSION"

.PP
This man page is correct for version 3\&.0\&.25 of the Samba suite\&.

.SH "AUTHOR"

.PP
The original Samba software and related utilities were created by Andrew Tridgell\&. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed\&.